Interchangeable hammer



May 26, 1931. F. scHwElGERT INTERCHANGEABLE HAMMER Filed April 17, 1930 NSAQ A.;

Patented May 26, 1931 PATENT OFFICE y FREDERICK SGHWEIGERT, F NEW YORK, N. Y.

INTERCHANGEABLE HAMMER Application filed April 17, 1930. serial No. 445,109.

This invention relates to new and useful improvements in a hammer andA the like.

The invention has for an object lthe provision of a device of the class mentioned which is of simple durable construction, dependable in use and efficient in action, and which can be manufactured and sold at a reasonable cost. i

The invention proposes in combination l@ with a hammer head or the like having a removable striking end, nail puller or the like, a tongue projecting from one of said elements and consisting of an outer portion extending completely from end to end of said element and an inner yportion extending` from one end to near the other end, said tongue engaging into a groove in the other of said elements, said groovehaving an `inner portion extending from end to end of said element receiving said outer element of thetongue, and an outer portion extending from one end to near the other end leaving a bridge on said element for abutting against said inner porn tion of the tongue.

2 For further comprehension of the invention, and of the objects and advantages thereof, reference will be had to the following description andaccompanying drawings, and to the appended claims in which the Various novel features ofthe invention are more particularly set forth.V

In the accompanying drawings forming a material part of this disclosure or Fig. 1 is a side elevational View of a ham'- "0 mer head constructed accordingto this invention. Y Y

Fig. '2 is a fragmentary plan view of a'portion of F'ig. 1, seen asthoughlookin'g on the line .2-2 of Fig. 1.V f l Fig. 3 is a fragmentary vertical sectional view taken on the line 3 3 of Fig. 2.

Fig. 4 is a fragmentary perspective view of the striking end of the hammer head with the r striking end removed.

Fig. 5 is a fragmentary perspective-view ofthe nail puller end of the hammer head with the nailpuller removed.

Fig. Gis a perspective view of the nail puller, perse.

Fig. 7 is an elevational view as'thoughlookingin the direction of theline 7-7 of Fig. 5.

n ig. 8 is a fragmentary horizontal sectional view taken on the line 8-8 of Fig. 7

Fig. 9 is a perspective view of a modified hammer head constructed according to another embodiment of this invention.

Fig. v10 is a fragmentary horizontal sectional view taken on the line 10-10 of Fig. 9.

Fig. y11 is an end elevationalview as though taken on the line 11-11 of Fig. 9, vbut illus- 69 trating a modified form.

Fig. 12 is a plurality of sectional views, illustrating a number of different tongue and grooveV constructions adapted for arrangement according to this invention.

Fig. 13 is an enlarged perspective view of a portion of Fig. 7.

The reference numeral 10 indicates generally a hammer head of any design and construction provided with a removable striking 70 end 11 and/or a removablenail pulling end 12. Each of these ends are so constructed as to haveza tongue 13 projecting from one of said elements and consisting of an outer portion 14 extending completely frontend to end of said element and an inner portion 15 eX- tending from one end to near the other end, and said tongue 13 engaging in a groove 16 formed in the other of said elements and said groove having an inner end 17 extending from end to end of said element receiving said outer element 14 ofthe tongue, and an'outer por- Y tion 18 extending from one end to near the other end leaving a bridge 19 on said element forv abutting against said inner portion 15 of the tongue. f f In Figs. 1 to 6 inclusive the hammer'head 10 has been shownformed with a round striking 4end 11 and with a conventional nail pull er 12. The tongues 13 are shown projecting 9G from both lthe striking end 11 and the -nail puller end 12 and engaging in grooves formed inthe hammer head 10. `These grooves and tongues have been shown of T construction. The outer portion 14 of the tongue 13 repre- 90 sents the top horizontal element of the T shape, whilezthe inner portion 15 represents the vertical arm of the T shape. Y

An inspectionof Figs. 3 and 6 clearly illustrates that the inner portion ,15 Vof Che m0 tongue extends from the top ot the element to near the bottom of the element as has been recited previously. The outer portion extends from end to end of the element as may be seen from an inspection of Figs. 3 and 6.

This construction allows the striking end or the nail pulling end to be vertically withdrawn from the groove, or to be engaged into the groove. vWhen thus engaged into the groove a. portion of the tongue extends out from the bottom so that a chisel or other tool may be engaged against this portion and hammered for loosening the parts. The bridge 19 restrains the engagement of these parts to correct relations, that is, as shown in Fig. 1. An aperture 2O is engaged thru the elements 11 and 12, and 10, for the reception ot a pin screw or the like, to lock all of these parts in place.

In Figs. 7 and 8 the bridge portion 19 is clearly shown to be formed of two sections adapted for moving out from their natural positions into a position hid within the body portion 10 so that the outer portion of the groove ext-ends completely from end to end tor the reception of a tongue having its inner portion extending completely from end to end. This arrangement is accomplished by a finger 21 projecting from each of the sections ot the bridge and extending into cavities 22 formed in the opposite sides of the groove 16. The tongue is of smaller width than the height of the bridge section so that ordinarily the bridge section is held as shown in Fig. 7. A pin 28 projects from each oi the lingers 21 into vertical slots 24 formed in the body portion 10 tor pivotally mounting the sections 19 and allowing the sections to be lifted upward and to be swung inward into the cavity 22. This clears the outer portion of the groove and a striking end or a nail puller which have tongues extending completely from end to end may be inserted. In the normal operation of this arrangement, it is used in a manner similar to the pretrred form inst described. In the event that it is desired to remove the bridge portion 19. it is merely necessary to iirst liit one of the sections oft' the bridge portion so that the pin 23 is in the upper end of the slot 2e and the bridge sections are no longer in contact with one another, one being above the other. The sections are then free and can be `pivoted about on pins into the cavities 22 and out of the grooves 1G.

In Figs. 9 and 10 an embodiment of the device has been shown, in which a hammer head 10 has been illustrated, difiering from the previous described hammer head merely in that its striking end 11 is of square construction and it is provided with a tail head 12 in lieu of the nail pulling end. Both the striking end and the tail end are provided with' tongues engaging in grooves in the head portion 10 as previously described. An-

other distinguishing feature is that the tongues are of dillerent shape than the T shape shown in the previous terms. A. dovetailed tongue 13 has been shown for connecting the striking end l1 with the body portion 10', and a tongue 153b having several lateral projections has been shown connecting the tail 12 with the body portion 10. In Fig. 10, particularly7 the bridge portion 19 has been illustrated for pointing out that the constructions oll the tongue and grooves are similar to that shown in the preferred form.

In Fig. 11 another modified form of the device shown in Figs. 9 and 10 has been illustrated, which is very similar to the embodiment shown in Figs. 7 and 8. The only distinction is that it is applied to the particular shaped tongue 13 shown in Figs. 9 and 10. A detail description is thought not necessary since the parts may be easily recognized by reference to Figs. 7 and 8, in that all the parts correspond.

In Fig. 12 a plurality of dil'izerent shaped tongues 13b has been illustrated. These diiierent shaped tongues have been shown particularly to emphatically pointout that the particular shape of the tongue and grooves does not constitute a limitation in this invention, since various shapes may be used with application to the same arrangement. Details of the arrangement of the various tongues shown in Fig. 12 is not thought necessary since it is obvious after an understanding of the previous igures.

While I have shown and described the preferred embodiment of my invention, it is to be understood that T do not limit myself to the precise construction herein disclosed and the right is reserved to all changes and modifications coming within the scope of the invention as defined in the appended claims.

Having thus described my invention, what l claim as new, and desire to secure by United States Letters Patent is:

1. In combination with a hammerhead having a removable striking end and nail puller, a tongue projecting from one of said elements and consisting ot an outer portion extending completely from end to end of said element and an inner portion extending from one end to near the other end, and said tongue engaging into a groove in the other of said elements, said groove ,having an inner portion extending `from end to end of said element receiving said outer element of thc tongue and an outer portion extending from one end to near the other end leaving a bridge portion on said element for abutting against -said inner portion of the tongue, said bridge portion being made of separate sections pivotally supported, means t'or normally holding the bridge sections across said groove and for allowing pivoting of these sections out of the groove.

2. In combination with a hammer head having a removable striking end and nail puller, a tongue projecting from one of said elements and consisting of an outer portion extending completely from end to end of said element and an inner portion extending from one end to near the other end, and said tongue engaging in a groove in the other of said elements, said' groove having an inner portion extending from end to end of said element receiving said outer element of the tongue and an outer portion extending from one end to near the other end leaving a bridge portion on said element for abutting against said inner portion of the tongue, said bridge portion being made of separate sections pivotally supported, means for normally holding the bridge sections across said groove and for allowing pivoting of these sections out of the groove, and said means for allowing pivoting of these sections out of the groove comprising a finger projecting from each of the said sections and into cavities formed in the body portion and a pin projecting from each finger and engageable in slots formed in the said body portion so as to allow a section to be lifted and permitting both sections to be swung on said pins into the 4said cavities.

In testimony whereof I have atixed my sigr nature.

FREDERICK SCHWEIGERT. 

